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| Low cost logic analyzer probe for Rigol MSO5000 EasyEDA project |
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| Swake:
Hi Peter and S. Petrukhin, What size are the resistors, the capacitors and the LED in the V3 design? 0805, 0603? The Onsemi MC33375ST-3.3T3G in SOT-223-3 package is not in stock. A suggestion for an alternative would be very welcome. Thanks all for this nice little project, it has a high approval rate of the wallet manager ;D |
| Swake:
Have found the XC6203E332FR-G with Quiescent Current of only 8 µA. I think is needs 3.5V on input minimum Max Input voltage is 8V, is that enough? I remember something about 4V input. Different implementation compared to the MC33375ST (no on/off pin for example) this will require PCB change. Alternative is MCP1755ST-3302E/DB with Quiescent Current of only 68 µA. Needs 3.6V on the input minimum. Max Input voltage goes up to 16V. Also different implementation compared to the MC33375ST, but less change required. |
| S. Petrukhin:
--- Quote from: Swake on February 13, 2023, 09:26:54 pm ---Hi Peter and S. Petrukhin, What size are the resistors, the capacitors and the LED in the V3 design? 0805, 0603? The Onsemi MC33375ST-3.3T3G in SOT-223-3 package is not in stock. A suggestion for an alternative would be very welcome. Thanks all for this nice little project, it has a high approval rate of the wallet manager ;D --- End quote --- Hi, Swake! Version 3.0 was created by Peter_the_diver. I do not know the details. I think it makes sense for you to take a look at the board and the documentation that Peter kindly published on the site eltguy.de. |
| Swake:
I see now there is more than one page in the PDF.... :palm: |
| gharac:
I have built version 3 with a MCP1754. It works and has enough drop-out and mA. However, the middle pin must be lifted because the MCP1754 has no enable pin. Alternatively cut the trace between pin 1 and 2. https://ww1.microchip.com/downloads/en/DeviceDoc/20002276C.pdf |
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